Prineville Weather in December
Average highs run from 45°F on December 1 to 41°F on December 31, and lows from 26°F to 24°F. Normal precipitation for the month is 1.33 in over about 8 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 42°F
- Average low
- 24°F
- Precipitation
- 1.33 in
- Snowfall
- 1.5 in
- Record high
- 76°FDec 5, 1901
- Record low
- -32°FDec 22, 1924
- Chance of a freeze
- 100%
- Daylight
- 9 h 06 min to 8 h 55 min
- Cloud cover
- 70%
- Humidity
- 86%
- Dew point
- 27°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 45°F | 26°F | 70°F 1898 | 1°F 1936 | 29% | 5% |
| Dec 2 | 45°F | 26°F | 72°F 2021 | 2°F 1985 | 29% | 5% |
| Dec 3 | 44°F | 25°F | 72°F 1901 | 2°F 1985 | 29% | 5% |
| Dec 4 | 44°F | 25°F | 74°F 1901 | -8°F 1992 | 28% | 5% |
| Dec 5 | 44°F | 25°F | 76°F 1901 | -18°F 1992 | 28% | 5% |
| Dec 6 | 43°F | 25°F | 70°F 1901 | -8°F 1909 | 28% | 5% |
| Dec 7 | 43°F | 25°F | 70°F 1901 | -20°F 1972 | 28% | 5% |
| Dec 8 | 43°F | 24°F | 72°F 1915 | -17°F 2013 | 27% | 5% |
| Dec 9 | 43°F | 24°F | 67°F 1933 | -29°F 1972 | 27% | 5% |
| Dec 10 | 42°F | 24°F | 64°F 1993 | -30°F 1972 | 27% | 5% |
| Dec 11 | 42°F | 24°F | 67°F 1901 | -19°F 1932 | 27% | 4% |
| Dec 12 | 42°F | 24°F | 68°F 1901 | -31°F 1919 | 27% | 4% |
| Dec 13 | 42°F | 24°F | 63°F 1897 | -15°F 1972 | 26% | 4% |
| Dec 14 | 42°F | 24°F | 69°F 1901 | -16°F 1972 | 26% | 4% |
| Dec 15 | 41°F | 24°F | 71°F 1901 | -9°F 1932 | 26% | 4% |
| Dec 16 | 41°F | 24°F | 64°F 1901 | -11°F 1922 | 26% | 4% |
| Dec 17 | 41°F | 23°F | 67°F 1901 | -18°F 1924 | 26% | 4% |
| Dec 18 | 41°F | 23°F | 64°F 1900 | -15°F 1924 | 26% | 4% |
| Dec 19 | 41°F | 23°F | 67°F 1901 | -12°F 1924 | 25% | 4% |
| Dec 20 | 41°F | 23°F | 61°F 1900 | -5°F 1921 | 25% | 4% |
| Dec 21 | 41°F | 23°F | 68°F 1900 | -16°F 1990 | 25% | 4% |
| Dec 22 | 41°F | 23°F | 64°F 1900 | -32°F 1924 | 25% | 4% |
| Dec 23 | 41°F | 23°F | 69°F 1900 | -32°F 1924 | 25% | 4% |
| Dec 24 | 41°F | 23°F | 70°F 1900 | -18°F 1924 | 25% | 4% |
| Dec 25 | 41°F | 23°F | 68°F 1900 | -6°F 1983 | 25% | 4% |
| Dec 26 | 41°F | 23°F | 66°F 1900 | -8°F 1988 | 25% | 4% |
| Dec 27 | 41°F | 23°F | 69°F 1900 | -9°F 1916 | 25% | 4% |
| Dec 28 | 41°F | 23°F | 68°F 1901 | -2°F 1983 | 25% | 4% |
| Dec 29 | 41°F | 24°F | 67°F 1901 | -1°F 1990 | 26% | 4% |
| Dec 30 | 41°F | 24°F | 65°F 1980 | -6°F 1968 | 26% | 4% |
| Dec 31 | 41°F | 24°F | 70°F 1901 | -11°F 1923 | 26% | 4% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- December 1
- sunrise 7:19 AM, sunset 4:25 PM
- December 31
- sunrise 7:39 AM, sunset 4:34 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00356883 (Prineville), public domain. Records: NOAA GHCN-Daily, station USC00356883, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.